Bump symfony/process from 4.4.5 to 4.4.6

Bumps [symfony/process](https://github.com/symfony/process) from 4.4.5 to 4.4.6.
- [Release notes](https://github.com/symfony/process/releases)
- [Changelog](https://github.com/symfony/process/blob/master/CHANGELOG.md)
- [Commits](https://github.com/symfony/process/compare/v4.4.5...v4.4.6

)

Signed-off-by: dependabot-preview[bot] <support@dependabot.com>